Function interp_lapply 

fn interp_lapply(
    args: &[RValue],
    named: &[(String, RValue)],
    context: &BuiltinContext<'_>,
) -> Result<RValue, RError>

Apply a function over a vector or list, returning a list.

@param X vector or list to iterate over @param FUN function to apply to each element @param … additional arguments passed to FUN @return list of results